EP3718692B1 - Dispositif et procédé de finition de composants - Google Patents

Dispositif et procédé de finition de composants Download PDF

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Publication number
EP3718692B1
EP3718692B1 EP19167136.1A EP19167136A EP3718692B1 EP 3718692 B1 EP3718692 B1 EP 3718692B1 EP 19167136 A EP19167136 A EP 19167136A EP 3718692 B1 EP3718692 B1 EP 3718692B1
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EP
European Patent Office
Prior art keywords
chamber
components
blasting
depowdering
accordance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19167136.1A
Other languages
German (de)
English (en)
Other versions
EP3718692A1 (fr
Inventor
Jan Reinmann
Andreas Gottschalk
Tom Kollacks
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Roesler Holding GmbH
Original Assignee
Roesler Holding GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Roesler Holding GmbH filed Critical Roesler Holding GmbH
Priority to ES19167136T priority Critical patent/ES2943286T3/es
Priority to PL19167136.1T priority patent/PL3718692T3/pl
Priority to EP19167136.1A priority patent/EP3718692B1/fr
Publication of EP3718692A1 publication Critical patent/EP3718692A1/fr
Application granted granted Critical
Publication of EP3718692B1 publication Critical patent/EP3718692B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/18—Abrasive blasting machines or devices; Plants essentially provided with means for moving workpieces into different working positions
    • B24C3/26—Abrasive blasting machines or devices; Plants essentially provided with means for moving workpieces into different working positions the work being supported by barrel cages, i.e. tumblers; Gimbal mountings therefor
    • B24C3/28—Apparatus using nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
    • B24C9/006—Treatment of used abrasive material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/35—Cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Definitions

  • the present invention relates to a device for post-processing components produced using additive manufacturing processes according to the preamble of claim 1 ( WO 2017/017273 ).
  • a layered structure takes place using hardening or melting processes.
  • the components After production, the components must be cleaned of essentially powdery residues and post-treated in a suitable manner.
  • a device for post-processing components that have been produced using additive manufacturing processes includes a de-powdering chamber for pre-cleaning the components and a blasting chamber for post-treatment of the components.
  • Both chambers can be hermetically sealed and a bulkhead is provided between the two chambers, which has a through opening that can be closed by a flap. With such a device, after their production, the components can first be freed from powder residues in the de-powdering chamber
  • the hermetically sealed de-powdering chamber ensures that most of the powder remains in the chamber.
  • hermetically closable or sealed is not understood to mean that the chambers are sealed in an absolutely airtight or liquid-tight manner. Rather, both chambers should be closable in such a way that no significant amounts of powder or blasting agent can escape from the chamber or be transferred from one chamber to the other chamber.
  • the depowdering unit in the depowdering chamber can be closed by a cover that opens automatically. This allows the depowdering unit to be loaded automatically and the cover to be opened automatically if, for example, the components are to be conveyed from the depowdering unit into the blasting chamber.
  • the flap can have a transfer chute and can in particular be linearly displaceable. Due to the linear displaceability, the flap can be opened in a very space-saving manner, so that the entire device is compact. If a transfer chute is also attached to the flap, the pre-cleaned components can be conveyed into the blasting chamber via the transfer chute after opening the flap, as a result of which automated operation can be implemented in a simple manner.
  • the de-powdering unit can be moved back and forth horizontally.
  • a depowdering unit can have vibration generators in a manner known per se, with which the components located in the depowdering unit are made to vibrate. If the depowdering unit can also be moved back and forth horizontally, the components located in the depowdering unit can also be "shaken", which promotes depowdering.
  • the horizontal mobility of the depowdering unit makes it possible to move it into a loading position within the depowdering chamber, in which a loading device automatically conveys the components into the depowdering unit.
  • a loading unit can be provided with which the components can be automatically introduced into the de-powdering chamber.
  • the device can be operated largely automatically without manual intervention.
  • a troughed belt can be provided in the blasting chamber, which is in particular pivotably mounted.
  • the components in the blasting chamber can be moved around one another during blasting with blasting agent, so that the components can be blasted evenly from all sides in order to post-treat the components.
  • this can be moved back and forth about a horizontal axis.
  • a jet device can be provided in the region of the troughed belt, which can be moved into a receiving space of the troughed belt. This enables the blasting agent to be well aligned with the components. At the same time, the blasting device can also be moved so far out of the troughed belt that it can be freely pivoted about the horizontal axis. In this way, according to a further advantageous embodiment, the troughed belt can be pivoted into a receiving position and into a delivery position in order to receive or deliver the components.
  • the troughed belt is pivoted about the horizontal axis to such an extent that the opening of the trough is either pivoted in the direction of the depowdering chamber to pick up parts, or pivoted in the opposite direction to discharge components from the blasting chamber.
  • a separating device in which the blasting agent and powder residues are separated from one another in order to recycle the blasting agent that has already been used.
  • a supply device for ionized air can be provided in the depowdering chamber and/or in the blasting chamber.
  • a discharge hopper for the reworked components can be provided in or below the blasting chamber. With such a discharge funnel, blasting media can be collected again and fed to cleaning and recycling at the same time.
  • a recirculation circuit for powder and/or a recirculation circuit for blasting agent can be provided. In this way, both the powder and the abrasive can be reused, which enables extremely efficient operation at low operating costs.
  • the device shown for post-processing components produced using additive manufacturing processes has a housing 10 in which there is a de-powdering chamber 12 for pre-cleaning the components and a blasting chamber 14 for post-treatment of the components. Both chambers are in arranged side by side in the housing 10 and hermetically sealed in such a way that no significant amounts of powder can get out of the depowdering chamber 12 and of blasting agent out of the blasting chamber 14.
  • a bulkhead 16 is provided between the two chambers, which has a through-opening 18 ( 2 ) which can be closed by a linearly and vertically displaceable flap 20 .
  • the de-powdering unit 21 In the de-powdering chamber 12 there is a de-powdering unit 21 which can be moved back and forth within the chamber 12 along a horizontal guide 23 .
  • the depowdering unit 21 has an essentially cuboid receptacle 22 for components or for an entire powder cake, which is open at the top.
  • vibrators 24 At the bottom of the depowdering unit 21, vibrators 24 are arranged to depowder the contents of the container.
  • the container 22 can be closed by a cover 26, which can be opened and closed automatically by being lowered onto the container 22 by a device that is not shown ( 1 ) and is also lifted from it again ( 2 ).
  • the side wall 28 ( 2 ) of the container 22 can be folded outwards via a hinge and has two lateral guides, so that the components 22 located inside the container can be transferred through the through-opening 18 via the folded-down side wall 28 . From there, when the flap 20 is open, the components can enter the peening chamber 14 via a transfer chute 30 , the former being attached to the upper side of the flap 20 sloping downwards.
  • the transfer chute 30 is also provided with lateral guides.
  • a loading unit 32 which runs along a vertical guide 34 within the de-powdering chamber 12 is movable up and down, and through a closable access opening 36 ( 2 ) is horizontally movable out of the de-powdering chamber 12.
  • the charging unit 32 can be charged with components outside of the de-powdering chamber 12 .
  • the charging unit 32 can then be moved into the depowdering chamber 12 and there vertically upwards in order to deliver the components into the container 22 of the depowdering unit 21 with as little damage as possible after the latter has been moved under the charging unit 32 .
  • a troughed belt 40 for example made of wire mesh, plastic or rubber, is provided in the blasting chamber 14, which moves via deflection rollers, not shown in detail, in two different directions along the illustrated orbit, which basically has the shape of a U open at the top can be. As a result, parts located within the troughed belt 40 are circulated.
  • the troughed belt 40 is rotated about a horizontal axis A ( 2 and 3 ) can be pivoted in that the troughed belt or its deflection rollers are fastened between two pivotable discs 42 (only one disc can be seen in the figures).
  • the troughed belt 40 can be moved not only along the double arrow 44 ( 3 ) in two directions around its deflection rollers, but the entire troughed belt can also be moved in two directions along the double arrow 46 ( 3 ) pivot back and forth about the horizontal pivot axis A, which promotes additional overturning of the components located in the troughed belt.
  • the troughed belt 40 both in a receiving position ( 2 ), as well as in a delivery position ( 3 ) can be pivoted.
  • the troughed belt is pivoted counterclockwise so far that the depowdered components can be conveyed into the interior of the troughed belt via the folded-down side wall 28 and the transfer chute 30 .
  • the troughed belt is pivoted clockwise so far that the components located inside the troughed belt can be conveyed out of the interior of the troughed belt by rotating the troughed belt in the direction of arrow 48 .
  • a discharge flap 51 shown only schematically in the figures, is provided in a side wall of the housing 10, which can be opened and through which discharge of the parts from the housing 10 is possible.
  • FIG. 12 also makes clear that a blasting device 52 is provided within the blasting chamber 14, which can be inserted into the interior of the troughed belt 40 and with the aid of which the components located in the troughed belt can be blasted.
  • the jet device 52 can be folded down or retracted into the interior of the troughed belt 40 and is arranged on a roof 54 ( 1 ), which is intended to prevent blasting media from escaping from the area of the troughed belt during blasting.
  • the jet device 52 and the roof 54 are shown in FIGS 2 and 3 not shown.
  • a collecting funnel 50 which opens into a classifier 61, is provided below the troughed belt for collecting, returning and separating blasting agent, which can include articles made of glass, ceramic or plastic, for example, as well as powder residues.
  • blasting agent, blasting agent fragments and remaining powder residues from the blasting chamber 14 pass through the hopper 50 into the classifier 61 and are separated there with the aid of compressed air, so that powder residues and blasting agent fragments are separated from blasting agent that can still be reused.
  • Numeral 60 designates a container for residual powder and broken shot.
  • a fan 62 and a powder pre-separator 64 are provided for cleaning the blasting agent produced and for powder recovery.
  • Numeral 66 denotes a filter.
  • Return circuits (not shown in detail) are provided both for the powder removed from the components and for the blasted blasting agent, in order to recycle the powder and the blasting agent.
  • an ionized air supply device can be provided in the depowdering chamber 12 and/or in the blasting chamber 14 in order to minimize powder adhesion.
  • the components can first be introduced into the depowdering chamber 12 and depowdered there with the flap 20 closed.
  • the depowdered parts can then be blasted after opening the passage opening 18 in the bulkhead 16 and transferring them into the blasting chamber 14 after the bulkhead 16 has been closed again.
  • the components that have been reworked in this way can then be blasted and discharged from the blasting chamber 14 through the discharge flap 51 in a depowdered state.
  • the loading unit 32 is first moved horizontally out of the housing 10 and filled with the components.
  • the loading unit 32 is then moved into the in 1 returned position shown and the housing 10 is closed again.
  • the loading unit 32 can then be moved vertically into the in 2 position shown are moved upwards, whereupon the de-powdering unit 21 from the 2 position shown below the loading unit 32 can be moved horizontally to the left, so that the bottom of the loading unit 32 can be opened to deliver the components into the container 22 of the de-powdering unit 21.
  • the depowdering unit 22 is integrated into the in 2 position shown to the right, so that the lid 26 can be placed on the container 22.
  • the loading unit 32 can be returned to the in 1 shown position can be retracted.
  • the vibration generators 24 are then put into operation to depowder the parts in the container 22 and the depowdering unit 21 can also be moved back and forth horizontally by reversing the direction of movement in the direction of the double arrow D, so that depowdering of the components is additionally promoted.
  • the depowdering unit 21 is moved to the in 2 moved to the position shown, the lid 26 is lifted and the hinged side wall 28 is pivoted outwards with the flap 20 open, so that the components can be discharged from the container 22, for example by lifting the bottom of the container 22 or by operating a vibration device is taken.
  • the components then slide over the side wall 28 and the transfer chute 30 into the interior of the troughed belt 40, which in 2 position shown has been pivoted.
  • the troughed belt 40 can either be inserted into the 1 position shown can be pivoted and the components can be blasted using the blasting device 52. Additionally is it possible to rotate the troughed belt around the pivot axis A in the direction of the double arrow 46 ( 3 ) to pivot in order to tumble the components even better. At the same time, the troughed belt 40 is moved in one direction and/or in the other direction on its orbit.
  • the blasting device 52 After the blasting device 52 has been moved out of the interior of the troughed belt 40, it can be moved into the in 3 illustrated delivery position can be pivoted by the discs 42 are rotated about the axis A clockwise. If the troughed belt then moves in the direction of arrow 48 ( 3 ) is moved along its orbit, the components from the inside of the troughed belt can be conveyed through the discharge flap 51 from the housing 10.
  • components can be cleaned and reworked.
  • both roughly pre-cleaned components and a complete installation space of an additive manufacturing system can be processed.
  • the still recyclable powder that has been removed from the components is recycled.
  • Components from other additive manufacturing processes can also be processed in the device.
  • Compressed air can also be applied to the components for improved powder removal and post-processing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Claims (14)

  1. Dispositif de post-traitement de pièces fabriquées par des procédés de fabrication additive, comprenant
    une chambre de dépoudrage (12) pour le nettoyage préalable des pièces, dans laquelle est prévue une unité de dépoudrage (21),
    une chambre (14) de post-traitement des pièces, les deux chambres (12, 14) pouvant être fermées hermétiquement,
    caractérisé en ce que
    la chambre (14) de post-traitement des pièces comprend une chambre de grenaillage (14) ayant un organe de grenaillage (52) pour produits abrasifs en verre, céramique ou matière plastique,
    en ce que la chambre de dépoudrage (12) et la chambre de grenaillage (14) sont disposées l'une à côté de l'autre,
    en ce qu'une cloison (16) est prévue entre les deux chambres (12, 14), laquelle présente un orifice de passage (18) obturable par un volet (20), et en ce que l'unité de dépoudrage (21) dans la chambre de dépoudrage (12) est obturable par un couvercle (26) à ouverture automatisée.
  2. Dispositif selon la revendication 1,
    dans lequel le volet (20) comporte un glissoir de transfert (30) et peut en particulier être déplacé linéairement.
  3. Dispositif selon la revendication 1 ou 2,
    dans lequel l'unité de dépoudrage (21) est mobile horizontalement en va-et-vient.
  4. Dispositif selon l'une des revendications précédentes,
    dans lequel est prévue une unité de chargement (32) qui permet d'introduire de manière automatisée les pièces dans la chambre de dépoudrage (12).
  5. Dispositif selon l'une des revendications précédentes,
    dans lequel une bande en auge (40) est prévue dans la chambre de grenaillage (14), qui est en particulier montée de façon mobile en pivotement.
  6. Dispositif selon la revendication 5,
    dans lequel la bande en auge (40) dans la chambre de grenaillage (14) est mobile en va-et-vient autour d'un axe horizontal (A).
  7. Dispositif selon l'une des revendications précédentes 5 ou 6,
    dans lequel un organe de grenaillage (52) est prévu dans la zone de la bande en auge (40).
  8. Dispositif selon l'une des revendications précédentes 5 à 7,
    dans lequel la bande en auge (40) peut être pivotée aussi bien dans une position de réception que dans une position de distribution.
  9. Dispositif selon l'une des revendications précédentes,
    dans lequel est prévu un organe de séparation (61, 64, 66) dans lequel les fragments de produit abrasif et les résidus de poudre non recyclables sont éliminés.
  10. Dispositif selon l'une des revendications précédentes,
    dans lequel un organe d'alimentation en air ionisé est prévu dans la chambre de dépoudrage (12) et/ou dans la chambre de grenaillage (14).
  11. Dispositif selon l'une des revendications précédentes,
    dans lequel un dispositif d'évacuation (51) pour les pièces post-traitées est prévu à côté ou en dessous de la chambre de grenaillage (14).
  12. Dispositif selon l'une des revendications précédentes,
    dans lequel est prévu un circuit de retour de poudres et/ou un circuit de retour de produits abrasifs.
  13. Procédé de post-traitement de pièces fabriquées par des procédés de fabrication additive dans un dispositif selon l'une au moins des revendications précédentes, comprenant les étapes suivantes consistant à :
    introduire les pièces dans la chambre de dépoudrage et les dépoudrer, la cloison étant fermée,
    ouvrir la cloison et transférer les pièces dépoudrées à travers l'ouverture de passage jusque dans la chambre de grenaillage,
    fermer la cloison de protection et grenailler les pièces dans la chambre de grenaillage ; et
    sortir les pièces grenaillées et dépoudrées de la chambre de grenaillage.
  14. Procédé selon la revendication 13,
    dans lequel la poudre issue de la chambre de dépoudrage et/ou le produit abrasif issu de la chambre de grenaillage est recyclé(e).
EP19167136.1A 2019-04-03 2019-04-03 Dispositif et procédé de finition de composants Active EP3718692B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES19167136T ES2943286T3 (es) 2019-04-03 2019-04-03 Dispositivo y procedimiento para el acabado de componentes
PL19167136.1T PL3718692T3 (pl) 2019-04-03 2019-04-03 Urządzenie i sposób obróbki końcowej elementów konstrukcyjnych
EP19167136.1A EP3718692B1 (fr) 2019-04-03 2019-04-03 Dispositif et procédé de finition de composants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19167136.1A EP3718692B1 (fr) 2019-04-03 2019-04-03 Dispositif et procédé de finition de composants

Publications (2)

Publication Number Publication Date
EP3718692A1 EP3718692A1 (fr) 2020-10-07
EP3718692B1 true EP3718692B1 (fr) 2023-03-15

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EP19167136.1A Active EP3718692B1 (fr) 2019-04-03 2019-04-03 Dispositif et procédé de finition de composants

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EP (1) EP3718692B1 (fr)
ES (1) ES2943286T3 (fr)
PL (1) PL3718692T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202000017350A1 (it) * 2020-07-16 2022-01-16 Paolo Redaelli Metodo per trattare cake derivanti da processi di manifattura additiva
ES2971435T3 (es) 2021-02-01 2024-06-05 Roesler Holding Gmbh Procedimiento y dispositivo para tratar componentes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1816313A1 (de) * 1968-12-21 1970-08-13 Berger Maschf Gmbh UEberkopf-Beschicker fuer Putzmaschinen,insbesondere Raupenband-Putzmaschinen
CH648504A5 (de) * 1980-10-03 1985-03-29 Fischer Ag Georg Verfahren und einrichtung zum strahlbehandeln von werkstuecken.
US20090283119A1 (en) * 2008-05-16 2009-11-19 Khalil Moussa Post-Processing System For Solid Freeform Fabrication Parts
FR3039436B1 (fr) * 2015-07-30 2021-09-24 Michelin & Cie Dispositif de nettoyage a sec d’un plateau de fabrication additive

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Publication number Publication date
EP3718692A1 (fr) 2020-10-07
PL3718692T3 (pl) 2023-08-14
ES2943286T3 (es) 2023-06-12

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